<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <link rel="stylesheet" href="./index.css">
  <script src="index.js"></script>
</head>
<body>
<div id="clock">
  <span></span>点<span></span>分<span></span>秒
</div>
</body>
</html>
